Ontology Design And Performance Study Of Granulating Engine For Blast Furnace Slag

For the low efficiency of waste heat recovery in the process of blast furnace slag granulation,a new process of blast furnace slag granulation was proposed and the design and research of GES(Granulating Engine for Blast Furnace Slag)was also carried out.The engine is of great value to improve the efficiency of slag granulation and waste heat recovery.First of all,the granulating process production technology and production requirements of blast furnace slag were presented.By absorbing the advantage of existing blast furnace slag granulating process and waste heat recovery technology,the work requirement,process plan,composition and working principle of GES were determined.The technological process was described in detail.The working principles of the six main parts of the engine were analyzed in detail,including centrifugal accelerator,Water burst reactor,impeller,screw conveyor,rotor and Engine base.Consequently,a new type of general scheme of slag granulating engine was determined.The scheme can achieve high efficiency of slag granulation and waste heat recovery.For the first time,the engine can recover the waste heat of high slag by mechanical energy.Combined with this scheme,the characteristics of its work were analyzed.The slag process of the engine can be divided into six stages,including three granulation and two external works.Its working process has the characteristics of good granulation,high efficiency of energy recovery,water saving and small pollution.According to the actual production requirements,the process parameters were determined through drawing lessons from the existing slag treatment process and by means of the necessary analysis and calculation.The process parameters include water quality for Water burst,water quality for Air-cooled conveyor,water-slag quality ratio and so on.Then,according to the location and requirements of the divice,the mechanism parameters were determined by means of the mathematical modeling method.the mechanism parameters include the size of the slag channel,the size of the water detonation reaction chamber,the size of the impeller and the size of the helical conveying device.Finally,the performance parameters such as rotor torque and engine's rate of work were determined by means of the calculation method of jet engine thrust and the mechanical analysis of engine rotor.Afterwards,according to the result of the identified as well as the design and calculation of parameters of motor rotor institutions,granulating device,The engine's rotor mechanism,granulator device,engine base,starting device and power output device were designed and shaped in detail.According to the 3d design results,the engineering drawing of the GES is made as well as the 3d model assembly drawing of the whole machine.Through the inspection of the 3d interference check,the interference phenomenon of the whole part was eliminated,and the virtual prototype of the GES with reasonable structure is obtained.Finally,according to the working principle and working characteristics of the GES,the finite element model of the rotor body centrifugal accelerator structure was established based on the ANSYS Workbench software.After the load and constraint were applied the temperature field of the model was obtained through the calculation of the software.Then the temperature load,gravity and centrifugal force were applied to the structure,after that the model was analyzed by the calculation of the heat-structure coupling analysis.The stress of the model under the action of temperature field and gravity,centrifugal force was obtained.Finally combined with the above analysis results,the thermal insulation effect of refractory lining and the strength of the model were discussed.